package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;


    /**
     * 分类管理的分页查询，并且要用上分页插件
     * @param categoryPageQueryDTO
     * @return
     */
    @Override
    public PageResult page(CategoryPageQueryDTO categoryPageQueryDTO) {
        //1.设置分页参数
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
        //2.调用mapper方法进行模糊查询
 Page<Category> page= categoryMapper.list(categoryPageQueryDTO);
        //3.封装pageResult返回对象
        return new PageResult(page.getTotal(),page.getResult());

    }

    @Override
    public void insertCategory(CategoryDTO categoryDTO) {
        Category category = new Category();
        //属性拷贝
        BeanUtils.copyProperties(categoryDTO,category);
        //1.添加缺少的属性
        category.setStatus(StatusConstant.ENABLE);
       //category.setCreateTime(LocalDateTime.now());
        //category.setUpdateTime(LocalDateTime.now());
       //category.setCreateUser(BaseContext.getCurrentId());
       //category.setUpdateUser(BaseContext.getCurrentId());
        //2.调用mapper方法
        categoryMapper.addCategory(category);



    }

    @Override
    public void stop(Long id,Integer status) {
        Category category=Category.builder()
                .id(id)
                .status(status)
                //.updateTime(LocalDateTime.now())
                //.updateUser(BaseContext.getCurrentId())
                .build();

categoryMapper.update(category);

    }

    @Override
    public void delete(Long id) {
        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        int i= dishMapper.countDishId(id);
        if (i>0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
        int count = setmealMapper.countByCategoryId(id);
        if (count>0){
            //当前分类下有，不能套餐删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        categoryMapper.delete(id);
    }

    @Override
    public List<Category> typeSelect(Integer type) {
   List<Category> categoryList=  categoryMapper.select(type);
        return categoryList;
    }

    @Override
    public void updateCategory(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
      //  category.setUpdateUser(BaseContext.getCurrentId());
       // category.setUpdateTime(LocalDateTime.now());
        categoryMapper.updateCategory(category);
    }


}
